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Zabbix CVE-2026-1199

| EUVDEUVD-2026-60733 MEDIUM
Race Condition (CWE-362)
2026-08-18 Zabbix GHSA-vm66-478p-4mqw
Zabbix Information Disclosure Race Condition Suse
6.9
CVSS 4.0 · Vendor: Zabbix
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Severity by source

Vendor (Zabbix) PRIMARY
6.9 MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vuln.today AI
5.3 MEDIUM

Network-reachable login endpoint, no authentication or user interaction needed, limited to partial confidentiality via brute-force enablement; no integrity or availability impact.

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
SUSE
6.5 MEDIUM
AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L

Primary rating from Vendor (Zabbix).

CVSS VectorVendor: Zabbix

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
X

Lifecycle Timeline

2
Analysis Generated
Aug 18, 2026 - 13:11 vuln.today
CVE Published
Aug 18, 2026 - 12:15 cve.org
MEDIUM 6.9

DescriptionCVE.org

Zabbix API and Frontend login lockout mechanism has a flaw where several unsuccessful login requests are not properly counted towards the block counter if sent simultaneously, potentially allowing for more password guesses than intended.

AnalysisAI

Login lockout bypass in Zabbix API and Frontend enables brute-force attacks beyond intended limits by exploiting a race condition in the block counter. Simultaneous login requests are not properly synchronized against the lockout mechanism, allowing unauthenticated remote attackers to submit more credential guesses than the lockout policy permits. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Execution
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Vulnerability AssessmentAI

Exploitation No special configuration is required beyond a reachable Zabbix login endpoint (API or frontend). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 base score of 6.9 with vector AV:N/AC:L/AT:N/PR:N/UI:N reflects a network-accessible, no-prerequisites attack with low confidentiality impact (VC:L) and no integrity or availability impact. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Consult the Zabbix vendor issue tracker at https://support.zabbix.com/browse/ZBX-28076 for an official patch or fixed release version; a specific patched version is not independently confirmed from available data. … Detailed patch versions, workarounds, and compensating controls in full report.
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Same weakness CWE-362 – Race Condition

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Same technique Information Disclosure

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CVE-2025-24813 CRITICAL POC
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CVE-2015-1701 HIGH POC
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CVE-2017-0147 HIGH POC
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CVE-2014-6324 HIGH POC
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Vendor StatusVendor

SUSE

Severity: Moderate
Product Status
SUSE Linux Enterprise High Performance Computing 12 SP5 Affected
SUSE Linux Enterprise Server 12 SP5 Affected
SUSE Linux Enterprise Server 12 SP5-LTSS Affected
SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 Affected
SUSE Linux Enterprise High Performance Computing 12 SP3 Affected

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CVE-2026-1199 vulnerability details – vuln.today
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